Safeway Open: Scott Piercy shoots course record 62, Paul Casey joint second
|Safeway Open, first-round leaderboard|
|-10 S Piercy (US); -8 P Casey (Eng), P Kizzire (US); -7 J Wagner (US), K Stanley (US); -6 J Rahm (Spa), T Merritt (US), B Haas (US)|
|Selected: -5 M Laird (Sco); -3 P Mickelson (US); -2 M Kuchar (US)|
American Scott Piercy shot a course record 10-under-par 62 to take the first-round lead at the Safeway Open.
Piercy hit 12 birdies and two bogeys to open up a two-stroke lead over England's Paul Casey, who is tied for second with American Patton Kizzire.
Scotland's Martin Laird is tied for ninth, three shots further back.
Tiger Woods had planned to make his return at the tournament in Napa, California, but withdrew on Monday, saying his game was "too vulnerable".
The 14-time major champion and former world number one has been out for more than a year with back problems, and is now planning to come back in early December.